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Merge pull request #27 from randomstuff/master
Add stackcollapse-gdb for the poor man's profiler
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#!/usr/bin/perl -ws | ||
# | ||
# stackcollapse-gdb Collapse GDB backtraces | ||
# | ||
# Parse a list of GDB backtraces as generated with the poor man's | ||
# profiler [1]: | ||
# | ||
# for x in $(seq 1 500); do | ||
# gdb -ex "set pagination 0" -ex "thread apply all bt" -batch -p $pid 2> /dev/null | ||
# sleep 0.01 | ||
# done | ||
# | ||
# [1] http://poormansprofiler.org/ | ||
# | ||
# Copyright 2014 Gabriel Corona. All rights reserved. | ||
# | ||
# CDDL HEADER START | ||
# | ||
# The contents of this file are subject to the terms of the | ||
# Common Development and Distribution License (the "License"). | ||
# You may not use this file except in compliance with the License. | ||
# | ||
# You can obtain a copy of the license at docs/cddl1.txt or | ||
# http://opensource.org/licenses/CDDL-1.0. | ||
# See the License for the specific language governing permissions | ||
# and limitations under the License. | ||
# | ||
# When distributing Covered Code, include this CDDL HEADER in each | ||
# file and include the License file at docs/cddl1.txt. | ||
# If applicable, add the following below this CDDL HEADER, with the | ||
# fields enclosed by brackets "[]" replaced with your own identifying | ||
# information: Portions Copyright [yyyy] [name of copyright owner] | ||
# | ||
# CDDL HEADER END | ||
|
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use strict; | ||
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my $current = ""; | ||
my $previous_function = ""; | ||
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my %stacks; | ||
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while(<>) { | ||
chomp; | ||
if (m/^Thread/) { | ||
$current="" | ||
} | ||
elsif(m/^#[0-9]* *([^ ]*) ([^ ]*) ([^ ]*) ([^ ]*)/) { | ||
my $function = $3; | ||
my $alt = $1; | ||
if(not($1 =~ /0x[a-zA-Z0-9]*/)) { | ||
$function = $alt; | ||
} | ||
if ($current eq "") { | ||
$current = $function; | ||
} else { | ||
$current = $function . ";" . $current; | ||
} | ||
} elsif(!($current eq "")) { | ||
$stacks{$current} += 1; | ||
$current = ""; | ||
} | ||
} | ||
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foreach my $k (sort { $a cmp $b } keys %stacks) { | ||
printf "$k $stacks{$k}\n"; | ||
} |
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#!/usr/bin/perl -ws | ||
# | ||
# stackcollapse-recursive Collapse direct recursive backtraces | ||
# | ||
# Post-process a stack list and merge direct recursive calls: | ||
# | ||
# Example input: | ||
# | ||
# main;recursive;recursive;recursive;helper 1 | ||
# | ||
# Output: | ||
# | ||
# main;recursive;helper 1 | ||
# | ||
# Copyright 2014 Gabriel Corona. All rights reserved. | ||
# | ||
# CDDL HEADER START | ||
# | ||
# The contents of this file are subject to the terms of the | ||
# Common Development and Distribution License (the "License"). | ||
# You may not use this file except in compliance with the License. | ||
# | ||
# You can obtain a copy of the license at docs/cddl1.txt or | ||
# http://opensource.org/licenses/CDDL-1.0. | ||
# See the License for the specific language governing permissions | ||
# and limitations under the License. | ||
# | ||
# When distributing Covered Code, include this CDDL HEADER in each | ||
# file and include the License file at docs/cddl1.txt. | ||
# If applicable, add the following below this CDDL HEADER, with the | ||
# fields enclosed by brackets "[]" replaced with your own identifying | ||
# information: Portions Copyright [yyyy] [name of copyright owner] | ||
# | ||
# CDDL HEADER END | ||
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my %stacks; | ||
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while(<>) { | ||
chomp; | ||
if(/^(.*)\s([0-9]*)/) { | ||
my @stack = split(/;/, $1); | ||
my $value = $2; | ||
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my @result = (); | ||
my $i; | ||
my $last=""; | ||
for($i=0; $i!=@stack; ++$i) { | ||
if(!($stack[$i] eq $last)) { | ||
$result[@result] = $stack[$i]; | ||
$last = $stack[$i]; | ||
} | ||
} | ||
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$stacks{join(";", @result)} += $value; | ||
} | ||
} | ||
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foreach my $k (sort { $a cmp $b } keys %stacks) { | ||
printf "$k $stacks{$k}\n"; | ||
} |